| Attribute | Jawa Californian 250 1967 × | Hercules 315 1953 × |
|---|---|---|
| General | ||
| Production from (year) | 1967 | 1953 |
| Make | Jawa | Hercules |
| Model | Jawa Californian 250 | Hercules 315 |
| Category | Sport | Sport |
| Engine and transmission | ||
| Engine type | Twin, two-stroke | Single cylinder, two-stroke |
| Fuel system | Carburettor | Carburettor |
| Displacement (cm³) | 248 | 247 |
| Power (kw) | 11.7 | 9.3 |
| Cooling system | Air | Air |
| Transmission type,final drive | Chain | Chain |
| Bore (mm) | 75 | 65 |
| Stroke (mm) | 65 | 75 |
| Gearbox | - | 4-speed |
| Compression | 8.0:1 | - |
| Chassis | ||
| Front suspension | Telescopic | Telescopic |
| Rear suspension | Swingarm | - |
| Front brakes | - | Expanding brake (drum brake) |
| Rear brakes | - | Expanding brake (drum brake) |
| Frame type | - | Single tube |
| Front tyre | 3.25-19 | 3.25-19 |
| Rear tyre | 3.25-19 | 3.25-19 |
| Seat | Dual | Two seats |
| Wheels | Spoked | Spoked |
| Other | ||
| Starter | - | Kick |
| Dimensions | ||
| Dry weight (kg) | 128 | 140 |
| Power/weight ratio | 0.0914 | 0.0664 |
| Performance | ||
| Top speed (km/h) | 110 | 105 |